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She seduces him by first flirting and then kissing him before they fall into bed.

But Pria is not all that she seems - she's not really a mining ship captain but instead is a ruthless dealer of artifacts from the 29th century who wants his ship the Orville to sell in the future.

Pillow talk: The South African beauty, 42, slips under the sheets with shirtless comedian Seth McFarlane during her guest-starring stint

Back together: The Oscar winning actress reunited with her A Million Ways To Die In The West co-star Seth for the raunchy scene

Saucy: She seduces him by first flirting and then kissing him before they fall into bed

But Ed's first officer and ex wife Kelly Grayson, played by Adrianne Palicki, realizes something is wrong and helps expose Pria, before the pair get into a fight and Kelly gives her a busted lip.

Working together Ed and Kelly save the ship and destroy the wormhole to the future - but in doing so erase Pria from their time.

The Orville, created by MacFarlane, is a comedic, Star-Trek-like show that 'follows the crew of the not-so-functional exploratory ship in the Earth's interstellar fleet, 400 years in the future.

Getting close: The duo get it on after Theron's character Pria Lavesque was rescued by MacFarlane's Captain Ed Mercer

Pretense: But Pria is not all that she seems - she's not really a mining ship captain but instead is a ruthless dealer of artifacts from the 29th century who wants his ship the Orville to sell in the future

It comes after Charlize revealed that filming her lesbian love scene with Atomic Blonde co-star Sofia Boutella required good choreography and that their mutual dance backgrounds came in handy.

'All that stuff is technical … then it somehow looks magical. That's the secret of making movies,' she told News Corp.

'Sofia is so beautiful — incredibly stunning. I couldn't even imagine doing that with anybody else but her because we treated it like dancers.

Oh dear: Ed's first officer and ex wife Kelly Grayson, played by Adrianne Palicki, realizes something is wrong and helps expose Pria, before the pair get into a fight and Kelly gives her a busted lip

Strong: Working together Ed and Kelly save the ship and destroy the wormhole to the future - but in doing so erase Pria from their time

New project: The Orville, created by MacFarlane, is a comedic, Star-Trek-like show that 'follows the crew of the not-so-functional exploratory ship in the Earth's interstellar fleet, 400 years in the future

She continued: 'It was really about movement and choreography and, because we are both dancers, there was something that just happened with us that was very in synch.'

The South African-born beauty plays spy Lorraine Broughton in the newly released David Leitch-directed film.